had the same problem and was thinking at first that HP had discovered my crap writings and was punishing me which I thought was a bit harsh since Senior Google already knows this and won't visit.
Anyway mine showed up about 24 hours later. Not sure which happened first but I put my latest hub into the showcase hubs on my profile and I think it showed there before the hub listing.
I've noticed with the new snoozing hub mode that if you edit snoozing hubs they seem to show the circling arrows for a period before the yellow star thingy.
Noticed a lot of glitches and changes of late. I'm just waiting for the one that brings 100k traffic even if it's only for a short while and they take it back. You know the way the banks do.
Oh wait that's wrong the banks take back without giving you anything first, bugger.